EP0445020B1 - Sliding valve - Google Patents

Sliding valve Download PDF

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Publication number
EP0445020B1
EP0445020B1 EP91400514A EP91400514A EP0445020B1 EP 0445020 B1 EP0445020 B1 EP 0445020B1 EP 91400514 A EP91400514 A EP 91400514A EP 91400514 A EP91400514 A EP 91400514A EP 0445020 B1 EP0445020 B1 EP 0445020B1
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EP
European Patent Office
Prior art keywords
cover
valve body
opening
face
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP91400514A
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German (de)
French (fr)
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EP0445020A1 (en
Inventor
Michel Munier
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Nouvelle Generale D'hydraulique Et De Mecanique Ghm Ste
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Nouvelle Generale D'hydraulique Et De Mecanique Ghm Ste
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves

Definitions

  • the cover of a gate valve can pass from its closed position to its open position by being reassembled by means of a nut and worm system inside a vertical chimney.
  • This chimney is closed at its upper part by a cover, which is also crossed by the worm screw for adjusting the position of the cover.
  • the most common method of fixing the cover to the valve body is to date constituted by a flange, which comprises the cover, and which is secured to the valve body by a series of screws or bolts.
  • FR-A-2 492 938 describes such an arrangement, in which the fixing of the cover is carried out by adopting, at the upper part of the chimney of the valve body, a narrowing of the elliptical section of the cylindrical part of this valve body likely to house the cover in the open position.
  • the invention relates to a gate valve, as described in EP-A-0 198 109, the constitution of which is in accordance with the preamble of claim 1.
  • One of the advantages of the invention is to provide a simple and effective arrangement for fixing the cover to the valve body, which does not use the numerous screws and bolts previously used. This advantage is supplemented by the absence of narrowing of the section of the cylindrical part which it is possible to obtain and by the additional possibility of mounting and to dismantle the cover and the other parts without intervening on the fixing of the valve body on the pipe on which it is mounted.
  • the valve represented in the figures is arranged on a pipe 46, being connected thereto by bolting 138 of its flanges 39 to the upstream and downstream sections of said pipe 46.
  • Seals 20, 22 are arranged, on the one hand, the seal 20, between the upper plate 17 and the cover 11, on the other hand, the seal 22, between the upper plate 17 and the external transverse face 26 valve body.
  • blind cells 27 extend radially towards the outside of the valve body, the walls delimiting them not overlapping by the internal face 37 of constant section of the wall 32 delimiting the chamber 7, the opening 8 of this chamber 7 does not cause any narrowing of the section of said chamber 7.
  • the blind cells 27 are produced in protrusions 38 of the wall 32 delimiting the chamber 7, protrusions which extend radially outwards from the valve body.
  • the radial distance R14 between the axis 6 of the cover 11 and the external periphery 14 of an appendage 13 is less than the radial distance R8 between the central axis 6 of the internal face of the wall of the opening 8 in the area for introducing the appendages 13 inside the cells 27 and said internal face, in order to allow the introduction of the presentation of the appendages 13 opposite the openings 16 of said blind cells 27.
  • Each appendage is constituted by a flat plate 28, integral with the cover 11 and extending substantially transversely with respect to the axis 6 of the cover, and by a stiffener 29 integral with the cover 11 and the flat plate 28 and extending substantially parallel to the axis 6.
  • the cell 27 is itself stepped to receive this flat plate 28 and this stiffener 29, the height H27 of the part of the cell intended to receive the stiffener 29 being such that after tightening of the nut 23 on the thread 24 of the external part 19 of the cover 11, the flat plates 28 of the various appendages are supported on the transverse walls 25 of the cells, while the stiffeners 29 remain unsupported by said transverse walls 25.
  • each stiffener 29, which has, by its arrangement, the function of strengthening the attachment of the transverse plate 28, adjacent to the body of the cover 11, has another function: that of constituting a stop limiting the rotation of the cover 11 after introduction of each appendage 13 into the corresponding socket 27.
  • the bottoms of the cells 27 are delimited by flat walls 41, parallel to the axis 6, vertical in the embodiment shown, walls 41 on which said stiffeners 29 are capable of coming to bear and thus limiting the rotation of the cover 11 around axis 6.
  • the external part 19 of the cover 11 comprises a threaded bore 30 which cooperates with an external thread 31 of the cable gland 12 for fixing the cable gland, seals 33 and 34 of the cable gland being arranged, the seals 33 , between the end part of the threaded rod 9 and the cable gland 12, and the seal 34, between the cable gland 12, the upper part of which is shaped as a flange 42, and the upper face 43 of the cover 11, respectively .
  • a seal 15 is arranged between one, 35, of the faces of the flange 10 and a counterbore 36, which is provided with the cover 11.
  • This seal 15 is made of a material with a low coefficient of friction, so as to reduce the operating torque, and, is disposed between the face 35 of the flange 10, which is that of the two faces of the flange which is furthest from the cable gland 12 and the countersinking 36 of the cover, which is oriented towards said cable gland 12.
  • FIG. 1 shows the configuration of this part of the gate valve, in which the seal 15 is disposed, in the configuration for closing the pipe 37 by the sealing lid 3 and more generally in any configuration other than that of FIG. 2, the latter corresponding to the complete opening of the pipe 37 and to the forced pressing of the upper face 44 of the body of the sealing cap 3 on the lower face 45 of the cover 11 .
  • the embodiment shown comprises the new arrangement of the fixing of the cover 11 to the upper part of the valve body 1, an arrangement which, without calling for bolting of the most widely used known solution, also prevents shrinking of the section of the opening 8 in the area of the fixing of the cover to the upper part of the valve body.
  • the cover is provided with appendages 13-28-29, which extend radially with respect to the axis 6 of the chamber 7, and which cooperate with the cells 27 formed in the upper part of the wall 32 delimiting room 7.
  • the cells 27 are blind, extend only towards the outside of the valve body, that is to say beyond the cylinder defined by the internal face 37 of the wall 32, towards the outside valve body, and therefore cause no narrowing of the section of the chamber 7.
  • This arrangement could have been made by sparing the cells in the thickness of the wall 32, if this thickness had been sufficient to do this.
  • the upper plate 17 has been provided and is sealingly closed the opening 8, being subject to the valve body 1 by means of the nut 23.
  • the presence of the seals 20 and 22 makes it possible to dispense with having to provide surface conditions of exceptional quality allowing obtaining the seal between the upper plate 17, and, the cover 11 and the face 26 of the valve body, while achieving the desired seal between the plate 17 and the cover and the valve body.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compressor (AREA)
  • Pens And Brushes (AREA)
  • Sliding Valves (AREA)
  • Valve Housings (AREA)
  • Details Of Valves (AREA)
  • Centrifugal Separators (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Saccharide Compounds (AREA)

Abstract

The invention relates to a sliding valve comprising a chamber for receiving a shutter, the chamber being bounded by an opening in the valve body and a cover adapted to said opening. According to the invention a) said cover (11) is provided with two angularly spaced radial projections (28); b) the valve body (1) comprises two projection housings each consisting of a blind cell (27) able to receive one projection in a "bayonette"-type mounting; c) a top plate (17) comprises a bore (18) through which passes the external portion (19) of the cover (11), and a transverse face (21) capable of being placed upon that face (26) of the valve body which bounds the opening (8) of the valve body; and d) a nut (23) acts in combination with a thread (24) on the external portion (19) of the cover, in such a way as to press the projections (28) against the walls (25) bounding the cells (27) and the top plate (17) against the external transverse face (26) bounding the opening (8). One application is to the construction of a reliable high-performance sliding valve. <IMAGE>

Description

Selon la technique connue, l'opercule d'un robinet-vanne peut passer de sa position d'obturation à sa position d'ouverture en étant remonté au moyen d'un système à écrou et vis sans fin à l'intérieur d'une cheminée verticale. Cette cheminée est obturée à sa partie supérieure par un couvercle, qui est par ailleurs traversé par la vis sans fin de réglage de la position de l'opercule.According to the known technique, the cover of a gate valve can pass from its closed position to its open position by being reassembled by means of a nut and worm system inside a vertical chimney. This chimney is closed at its upper part by a cover, which is also crossed by the worm screw for adjusting the position of the cover.

Le mode de fixation le plus courant du couvercle sur le corps de vanne est constitué à ce jour par une bride, que comporte le couvercle, et qui est assujettie au corps de vanne par une série de vis ou de boulons.The most common method of fixing the cover to the valve body is to date constituted by a flange, which comprises the cover, and which is secured to the valve body by a series of screws or bolts.

Il a déjà été estimé que ces vis ou ces boulons de fixation pouvaient présenter l'inconvénient d'être sensibles à la corrosion, notamment en ce qui concerne les robinets-vannes enterrées, et il a déjà été envisagé de supprimer cette fixation usuelle par boulons par d'autres dispositifs de fixation.It has already been estimated that these fixing screws or bolts could have the disadvantage of being sensitive to corrosion, in particular with regard to buried gate valves, and it has already been envisaged to remove this usual fixing by bolts. by other fixing devices.

FR-A-2 492 938 décrit une telle disposition, dans laquelle la fixation du couvercle est réalisée en adoptant, à la partie supérieure de la cheminée du corps de vanne, un rétrécissement de la section elliptique de la partie cylindrique de ce corps de vanne susceptible d'abriter l'opercule en position d'ouverture.FR-A-2 492 938 describes such an arrangement, in which the fixing of the cover is carried out by adopting, at the upper part of the chimney of the valve body, a narrowing of the elliptical section of the cylindrical part of this valve body likely to house the cover in the open position.

Par ailleurs, les dispositifs connus à ce jour ne présentent pas toujours l'efficacité souhaitée en ce qui concerne la fixation elle-même du couvercle sur le corps de vanne.Furthermore, the devices known to date do not always have the desired efficiency with regard to the fixing itself of the cover on the valve body.

Le rétrécissement de la section de la partie cylindrique et l'absence éventuelle d'efficacité des dispositions connues constituent des inconvénients auxquels l'invention a pour but de remédier.The narrowing of the section of the cylindrical part and the possible lack of effectiveness of the known arrangements constitute disadvantages which the invention aims to remedy.

L'invention est relative à un robinet-vanne, tel que décrit dans EP-A-0 198 109, dont la constitution est conforme au préambule de la revendication 1.The invention relates to a gate valve, as described in EP-A-0 198 109, the constitution of which is in accordance with the preamble of claim 1.

Selon l'invention, les dispositions de la partie caractérisante de la revendication 1 sont adoptées.According to the invention, the provisions of the characterizing part of claim 1 are adopted.

Les avantageuses dispositions suivantes sont en outre, de préférence, également adoptées :

  • la distance radiale entre l'axe du couvercle et la périphérie externe d'un appendice est inférieure à la distance radiale entre l'axe central de la face interne de la paroi du corps de vanne définissant ladite ouverture et ladite face interne, afin de permettre l'introduction de présentation des appendices en regard des ouvertures desdites alvéoles borgnes ;
  • un joint d'étanchéité est disposé entre l'une des faces de la bride et un épaulement, dont est muni le couvercle ;
  • ledit joint d'étanchéité est disposé entre la face de la bride qui est celle des deux faces de la bride qui est la plus éloignée du presse-étoupe et l'épaulement du couvercle, qui est orienté vers ledit presse-étoupe ;
  • la partie externe du couvercle comprend un alésage taraudé qui coopère avec un filetage externe du presse-étoupe pour la fixation dudit presse-étoupe, des joints d'étanchéité du presse-étoupe étant disposés entre la partie extrême de la tige filetée et le presse-étoupe, et, entre le presse-étoupe et ledit couvercle, respectivement ;
  • des joints d'étanchéité sont disposés, d'une part, entre la plaque supérieure et le couvercle, d'autre part, entre la plaque supérieure et la face transversale externe du corps de vanne ;
  • les alvéoles borgnes s'étendent radialement vers l'extérieur du corps de vanne, les parois les délimitant ne chevauchant pas la face intérieure sensiblement cylindrique, à section constante, de la paroi délimitant la chambre, de sorte que l'ouverture de cette chambre ne provoque aucun rétrécissement de la section de ladite chambre ;
  • les alvéoles borgnes sont réalisées dans des excroissances de la paroi délimitant la chambre, excroissances qui s'étendent radialement vers l'extérieur du corps de vanne ;
The following advantageous arrangements are also preferably adopted:
  • the radial distance between the axis of the cover and the external periphery of an appendage is less than the radial distance between the central axis of the internal face of the wall of the valve body defining said opening and said internal face, in order to allow the introduction of presentation of the appendices opposite the openings of said blind cells;
  • a seal is arranged between one of the faces of the flange and a shoulder which is provided with the cover;
  • said seal is disposed between the face of the flange which is that of the two faces of the flange which is furthest from the cable gland and the shoulder of the cover, which is oriented towards said cable gland;
  • the external part of the cover comprises a threaded bore which cooperates with an external thread of the cable gland for fixing said cable gland, gaskets of the cable gland being disposed between the end part of the threaded rod and the gland cable gland, and between the cable gland and said cover, respectively;
  • seals are arranged, on the one hand, between the upper plate and the cover, on the other hand, between the upper plate and the external transverse face of the valve body;
  • the blind cells extend radially towards the outside of the valve body, the walls delimiting them not overlapping the substantially cylindrical internal face, of constant section, of the wall delimiting the chamber, so that the opening of this chamber does not causes no narrowing of the section of said chamber;
  • the blind cells are produced in protrusions of the wall delimiting the chamber, protrusions which extend radially outwards from the valve body;

L'un des avantages de l'invention est de proposer une disposition simple et efficace pour la fixation du couvercle sur le corps de vanne, qui n'a pas recours aux nombreuses vis et boulons antérieurement utilisés. Cet avantage est complété par l'absence de rétrécissement de la section de la partie cylindrique qu'il est possible d'obtenir et par la possibilité supplémentaire de monter et de démonter le couvercle et les autres pièces sans intervenir sur la fixation du corps de vanne sur la conduite sur laquelle il est monté.One of the advantages of the invention is to provide a simple and effective arrangement for fixing the cover to the valve body, which does not use the numerous screws and bolts previously used. This advantage is supplemented by the absence of narrowing of the section of the cylindrical part which it is possible to obtain and by the additional possibility of mounting and to dismantle the cover and the other parts without intervening on the fixing of the valve body on the pipe on which it is mounted.

L'invention sera mieux comprise, et des caractéristiques secondaires et leurs avantages apparaîtront au cours de la description d'une réalisation donnée ci-dessous à titre d'exemple.The invention will be better understood, and secondary characteristics and their advantages will appear during the description of an embodiment given below by way of example.

Il est entendu que la description et les dessins ne sont donnés qu'à titre indicatif et non limitatif.It is understood that the description and the drawings are given for information only and are not limiting.

Il sera fait référence aux dessins annexés, dans lesquels :

  • la figure 1 est une coupe axiale d'un robinet-vanne conforme à l'invention, entièrement monté, dans la configuration d 'obturation ;
  • la figure 2 est une coupe axiale analogue à celle de la figure 1, du même robinet-vanne, dans la configuration de non-obturation ;
  • la figure 3 est une coupe, analogue à la coupe suivant III-III de la figure 1 ; montrant le couvercle d'obturation en cours de montage sur le corps de vanne ; et,
  • la figure 4 est une vue suivant flèche F de la figure 2.
Reference will be made to the accompanying drawings, in which:
  • Figure 1 is an axial section of a gate valve according to the invention, fully mounted, in the obturation configuration;
  • Figure 2 is an axial section similar to that of Figure 1, of the same gate valve, in the non-shutter configuration;
  • Figure 3 is a section similar to the section along III-III of Figure 1; showing the shutter cover being mounted on the valve body; and,
  • FIG. 4 is a view along arrow F of FIG. 2.

Le robinet-vanne représenté sur les figures est disposé sur une conduite 46, en y étant raccordé par boulonnage 138 de ses brides 39 aux tronçons amont et aval de ladite conduite 46.The valve represented in the figures is arranged on a pipe 46, being connected thereto by bolting 138 of its flanges 39 to the upstream and downstream sections of said pipe 46.

Ce robinet-vanne comprend :

  • un corps de vanne 1 muni d'un siège 2 ;
  • un opercule d'obturation 3 susceptible d'être en appui étanche d'obturation sur le siège 2 et recevant dans un logement 4 un écrou prisonnier 5 d'axe 6 ;
  • une chambre 7, qui est ménagée dans le corps 1, qui est apte à recevoir ledit opercule 3 dans la configuration d'ouverture du robinet-vanne, et dont la face intérieure 37 est munie de deux glissières 40 de guidage du coulissement, à l'intérieur de ladite chambre 7, de l'opercule d'oburation 4, ladite face intérieure 37 étant cylindrique de section transversale droite ovale ;
  • une ouverture 8 de ladite chambre 7 qui permet le passage d'une tige filetée 9 coopérant avec l'écrou prisonnier 5 et comportant une bride de montage 10, la section transversale droite de ladite ouverture 8 étant identique à et dans le prolongement de celle de la face intérieure 37 ;
  • un couvercle 11 d'obturation de ladite ouverture 8 qui coopère au maintien axial de la tige filetée 9, ainsi qu'au montage à rotation de ladite tige autour dudit axe 6 ; et
  • un presse-étoupe 12 qui réalise l'étanchéité du passage de la tige filetée 9 à travers le couvercle 11.
This gate valve includes:
  • a valve body 1 provided with a seat 2;
  • a sealing cap 3 capable of being in sealed sealing support on the seat 2 and receiving in a housing 4 a captive nut 5 of axis 6;
  • a chamber 7, which is formed in the body 1, which is capable of receiving said cover 3 in the opening configuration of the gate valve, and the inner face 37 of which is provided with two slides 40 for guiding the sliding, at the 'interior of said chamber 7, of the sealing cap 4, said interior face 37 being cylindrical with an oval cross section;
  • an opening 8 of said chamber 7 which allows the passage of a threaded rod 9 cooperating with the captive nut 5 and comprising a mounting flange 10, the right cross section of said opening 8 being identical to and in the extension of that of the inner face 37;
  • a cover 11 for closing said opening 8 which cooperates in the axial retention of the threaded rod 9, as well as in the rotational mounting of said rod around said axis 6; and
  • a cable gland 12 which seals the passage of the threaded rod 9 through the cover 11.

Dans la réalisation représentée, les dispositions suivantes peuvent être observées :

  • le couvercle 11 est muni de deux appendices 13 qui s'étendent radialement, lesdits appendices étant espacés angulairement de manière régulière (diamétralement opposés) ;
  • le corps de vanne 1 comporte, dans la zone de l'ouverture 8, deux logements d'appendices symétriques par rapport à l'axe 6, chaque logement étant constitué par une alvéole borgne 27 susceptible de recevoir l'un des appendices 13 en un montage du type "à baïonnette" ;
  • une plaque supérieure 17, distincte du corps de vanne, présente, d'une part, un alésage 18 traversé par la partie externe 19 du couvercle 11, d'autre part, une face 21, transversale par rapport à l'axe 6 dudit alésage, apte à être en appui sur la face externe 26 du corps de vanne délimitant l'ouverture 8 dudit corps de vanne ;
  • un écrou 23 coopère avec un filetage 24, dont est munie la partie externe 19 du couvercle, de manière à mettre en appui, d'une part, les appendices 13 sur les parois transversales supérieures 25 délimitant les alvéoles 27, d'autre part, la plaque supérieure 17 sur la face transversale externe 26 délimitant l'ouverture 8 du corps de vanne.
In the illustrated embodiment, the following arrangements can be observed:
  • the cover 11 is provided with two appendages 13 which extend radially, said appendages being spaced angularly in a regular manner (diametrically opposite);
  • the valve body 1 comprises, in the region of the opening 8, two appendages housings symmetrical with respect to the axis 6, each housing being constituted by a blind cell 27 capable of receiving one of the appendages 13 in one "bayonet" type mounting;
  • an upper plate 17, distinct from the valve body, has, on the one hand, a bore 18 traversed by the external part 19 of the cover 11, on the other hand, a face 21, transverse with respect to the axis 6 of said bore , capable of being supported on the external face 26 of the valve body delimiting the opening 8 of said valve body;
  • a nut 23 cooperates with a thread 24, which is provided with the external part 19 of the cover, so as to support, on the one hand, the appendages 13 on the upper transverse walls 25 delimiting the cells 27, on the other hand, the upper plate 17 on the external transverse face 26 delimiting the opening 8 of the valve body.

Des joints d'étanchéité 20, 22 sont disposés, d'une part, le joint 20, entre la plaque supérieure 17 et le couvercle 11, d'autre part, le joint 22, entre la plaque supérieure 17 et la face transversale externe 26 du corps de vanne.Seals 20, 22 are arranged, on the one hand, the seal 20, between the upper plate 17 and the cover 11, on the other hand, the seal 22, between the upper plate 17 and the external transverse face 26 valve body.

Par ailleurs, les alvéoles borgnes 27 s'étendent radialement vers l'extérieur du corps de vanne, les parois les délimitant ne chevauchant par la face intérieure 37 à section constante de la paroi 32 délimitant la chambre 7, l'ouverture 8 de cette chambre 7 ne provoquant aucun rétrécissement de la section de ladite chambre 7. Les alvéoles borgnes 27 sont réalisées dans des excroissances 38 de la paroi 32 délimitant la chambre 7, excroissances qui s'étendent radialement vers l'extérieur du corps de vanne.Furthermore, the blind cells 27 extend radially towards the outside of the valve body, the walls delimiting them not overlapping by the internal face 37 of constant section of the wall 32 delimiting the chamber 7, the opening 8 of this chamber 7 does not cause any narrowing of the section of said chamber 7. The blind cells 27 are produced in protrusions 38 of the wall 32 delimiting the chamber 7, protrusions which extend radially outwards from the valve body.

La distance radiale R14 entre l'axe 6 du couvercle 11 et la périphérie externe 14 d'un appendice 13 est inférieure à la distance radiale R8 entre l'axe central 6 de la face interne de la paroi de l'ouverture 8 dans la zone d'introduction des appendices 13 à l'intérieur des alvéoles 27 et ladite face interne, afin de permettre l'introduction de présentation des appendices 13 en regard des ouvertures 16 desdites alvéoles borgnes 27.The radial distance R14 between the axis 6 of the cover 11 and the external periphery 14 of an appendage 13 is less than the radial distance R8 between the central axis 6 of the internal face of the wall of the opening 8 in the area for introducing the appendages 13 inside the cells 27 and said internal face, in order to allow the introduction of the presentation of the appendages 13 opposite the openings 16 of said blind cells 27.

Chaque appendice est constitué par une plaque plane 28, solidaire du couvercle 11 et s'étendant sensiblement transversalement par rapport à l'axe 6 du couvercle, et par un raidisseur 29 solidaire du couvercle 11 et de la plaque plane 28 et s'étendant sensiblement parallèlement à l'axe 6. L'alvéole 27 est elle-même étagée pour recevoir cette plaque plane 28 et ce raidisseur 29, la hauteur H27 de la partie de l'alvéole destinée à recevoir le raidisseur 29 étant telle qu'après serrage de l'écrou 23 sur le filetage 24 de la partie externe 19 du couvercle 11, les plaques planes 28 des divers appendices sont en appui sur les parois transversales 25 des alvéoles, alors que les raidisseurs 29 restent hors d'appui desdites parois transversales 25.Each appendage is constituted by a flat plate 28, integral with the cover 11 and extending substantially transversely with respect to the axis 6 of the cover, and by a stiffener 29 integral with the cover 11 and the flat plate 28 and extending substantially parallel to the axis 6. The cell 27 is itself stepped to receive this flat plate 28 and this stiffener 29, the height H27 of the part of the cell intended to receive the stiffener 29 being such that after tightening of the nut 23 on the thread 24 of the external part 19 of the cover 11, the flat plates 28 of the various appendages are supported on the transverse walls 25 of the cells, while the stiffeners 29 remain unsupported by said transverse walls 25.

A noter que chaque raidisseur 29, qui a, de par sa disposition, la fonction de renforcer l'attache de la plaque transversale 28, adjacente au corps du couvercle 11, a une autre fonction : celle de constituer une butée de limitation de la rotation du couvercle 11 après introduction de chaque appendice 13 dans l'alvéole 27 correspondante. A cet effet, les fonds des alvéoles 27 sont délimités par des parois planes 41, parallèles à l'axe 6, verticales dans la réalisation représentée, parois 41 sur lesquelles lesdits raidisseurs 29 sont susceptibles de venir en appui et ainsi de limiter la rotation du couvercle 11 autour de l'axe 6.Note that each stiffener 29, which has, by its arrangement, the function of strengthening the attachment of the transverse plate 28, adjacent to the body of the cover 11, has another function: that of constituting a stop limiting the rotation of the cover 11 after introduction of each appendage 13 into the corresponding socket 27. To this end, the bottoms of the cells 27 are delimited by flat walls 41, parallel to the axis 6, vertical in the embodiment shown, walls 41 on which said stiffeners 29 are capable of coming to bear and thus limiting the rotation of the cover 11 around axis 6.

La partie externe 19 du couvercle 11 comprend un alésage taraudé 30 qui coopère avec un filetage externe 31 du presse-étoupe 12 pour la fixation du presse-étoupe, des joints d'étanchéité 33 et 34 du presse-étoupe étant disposés, les joints 33, entre la partie extrême de la tige filetée 9 et le presse-étoupe 12, et le joint 34, entre le presse-étoupe 12, dont la partie supérieure est conformée en une bride 42, et la face supérieure 43 du couvercle 11, respectivement.The external part 19 of the cover 11 comprises a threaded bore 30 which cooperates with an external thread 31 of the cable gland 12 for fixing the cable gland, seals 33 and 34 of the cable gland being arranged, the seals 33 , between the end part of the threaded rod 9 and the cable gland 12, and the seal 34, between the cable gland 12, the upper part of which is shaped as a flange 42, and the upper face 43 of the cover 11, respectively .

Enfin, un joint d'étanchéité 15 est disposé entre l'une, 35, des faces de la bride 10 et un lamage 36, dont est muni le couvercle 11. Ce joint d'étanchéité 15 est réalisé en un matériau à faible coefficient de frottement, de manière à réduire le couple de manoeuvre, et, est disposé entre la face 35 de la bride 10, qui est celle des deux faces de la bride qui est la plus éloignée du presse-étoupe 12 et le lamage 36 du couvercle, qui est orienté vers ledit presse-étoupe 12.Finally, a seal 15 is arranged between one, 35, of the faces of the flange 10 and a counterbore 36, which is provided with the cover 11. This seal 15 is made of a material with a low coefficient of friction, so as to reduce the operating torque, and, is disposed between the face 35 of the flange 10, which is that of the two faces of the flange which is furthest from the cable gland 12 and the countersinking 36 of the cover, which is oriented towards said cable gland 12.

La figure 1 montre la configuration de cette partie du robinet-vanne, dans laquelle est disposé le joint d'étanchéité 15, dans la configuration d'obturation de la conduite 37 par l'opercule d'obturation 3 et plus généralement dans toute configuration autre que celle de la figure 2, celle-ci correspondant à l'ouverture compléte de la conduite 37 et à la mise en appui forcé de la face supérieure 44 du corps de l'opercule d'obturation 3 sur la face inférieure 45 du couvercle 11.FIG. 1 shows the configuration of this part of the gate valve, in which the seal 15 is disposed, in the configuration for closing the pipe 37 by the sealing lid 3 and more generally in any configuration other than that of FIG. 2, the latter corresponding to the complete opening of the pipe 37 and to the forced pressing of the upper face 44 of the body of the sealing cap 3 on the lower face 45 of the cover 11 .

Dans cette configuration de la figure 2, on observe que le joint d'étanchéité 15 est serré et réalise l'étanchéité entre la face 35 de la bride 10 et le lamage 36, et qu'en raison de l'étanchéité par ailleurs réalisée par les joints d'étanchéité 20 et 22, la chambre 7 est isolée de la partie supérieure du robinet-vanne et, notamment, du presse-étoupe 12. Celui-ci peut ainsi éventuellement, si besoin est, être démonté, par exemple dans le but d'en changer les joints d'étanchéité 33 et 34, alors même que la conduite 46 reste apte à véhiculer du fluide, n'étant pas, dans la configuration de la figure 2, obturée par l'opercule d'obturation 3.In this configuration of FIG. 2, it can be seen that the seal 15 is tight and achieves the seal between the face 35 of the flange 10 and the counterbore 36, and that due to the seal otherwise produced by the seals 20 and 22, the chamber 7 is isolated from the upper part of the gate valve and, in particular, from the cable gland 12. This can thus optionally, if necessary, be dismantled, for example in the purpose of changing the seals 33 and 34, even though the pipe 46 remains capable of conveying fluid, not being, in the configuration of FIG. 2, closed by the shutter 3.

Les avantages des dispositions conformes à l'invention vont maintenant être rappelés en faisant référence à la réalisation qui vient d'être décrite.The advantages of the arrangements according to the invention will now be recalled with reference to the embodiment which has just been described.

Tout d'abord, la réalisation représentée comprend la disposition nouvelle de la fixation du couvercle 11 à la partie supérieure du corps de vanne 1, disposition, qui, sans faire appel au boulonnage de la solution connue la plus répandue, évite par ailleurs le rétrécissement de la section de l'ouverture 8 dans la zone de la fixation du couvercle à la partie supérieure du corps de vanne.First of all, the embodiment shown comprises the new arrangement of the fixing of the cover 11 to the upper part of the valve body 1, an arrangement which, without calling for bolting of the most widely used known solution, also prevents shrinking of the section of the opening 8 in the area of the fixing of the cover to the upper part of the valve body.

Dans ce but, le couvercle est muni d'appendices 13-28-29, qui s'étendent radialement par rapport à l'axe 6 de la chambre 7, et qui coopèrent avec les alvéoles 27 ménagées dans la partie supérieure de la paroi 32 délimitant la chambre 7.For this purpose, the cover is provided with appendages 13-28-29, which extend radially with respect to the axis 6 of the chamber 7, and which cooperate with the cells 27 formed in the upper part of the wall 32 delimiting room 7.

De manière préférée, les alvéoles 27 sont borgnes, s'étendent uniquement vers l'extérieur du corps de vanne, c'est-à-dire au-delà du cylindre défini par la face interne 37 de la paroi 32, vers l'extérieur du corps de vanne, et ne provoquent de ce fait aucun rétrécissement de la section de la chambre 7.Preferably, the cells 27 are blind, extend only towards the outside of the valve body, that is to say beyond the cylinder defined by the internal face 37 of the wall 32, towards the outside valve body, and therefore cause no narrowing of the section of the chamber 7.

Cette disposition aurait pu être réalisée en ménageant les alvéoles dans l'épaisseur de la paroi 32, si cette épaisseur avait été suffisante pour ce faire.This arrangement could have been made by sparing the cells in the thickness of the wall 32, if this thickness had been sufficient to do this.

Il est cependant apparu judicieux de ne pas grever le poids total du robinet-vanne en prévoyant une surépaisseur sur la presque totalité de la hauteur de la paroi 32, uniquement en vue de permettre de réaliser les alvéoles 27 dans l'épaisseur de la partie supérieure. De ce fait, la disposition a été prévue selon laquelle la paroi 32 a des excroissances qui s'étendent vers l'extérieur et dans lesquelles les alvéoles borgnes 27 sont ménagées.However, it appeared advisable not to burden the total weight of the gate valve by providing an allowance over almost the entire height of the wall 32, only in order to allow the cells 27 to be made in the thickness of the upper part. . Therefore, the provision has been made according to which the wall 32 has protrusions which extend outwards and in which the blind cells 27 are formed.

Il convient naturellement de compléter les moyens précités de fixation du couvercle 11, sans obturation complète de la chambre 7, par des moyens d'obturation de ladite chambre 7. Selon l'invention, la plaque supérieure 17 a été prévue et obture de manière étanche l'ouverture 8, en étant assujettie au corps de vanne 1 au moyen de l'écrou 23.It is naturally appropriate to supplement the aforementioned means for fixing the cover 11, without complete sealing of the chamber 7, by means for closing said chamber 7. According to the invention, the upper plate 17 has been provided and is sealingly closed the opening 8, being subject to the valve body 1 by means of the nut 23.

Bien entendu, la présence des joints d'étanchéité 20 et 22 permet de s'affranchir de devoir prévoir des états de surface d'une qualité exceptionnelle permettant l'obtention de l'étanchéité entre la plaque supérieure 17, et, le couvercle 11 et la face 26 du corps de vanne, tout en réalisant l'étanchéité désirée entre la plaque 17 et le couvercle et le corps de vanne.Of course, the presence of the seals 20 and 22 makes it possible to dispense with having to provide surface conditions of exceptional quality allowing obtaining the seal between the upper plate 17, and, the cover 11 and the face 26 of the valve body, while achieving the desired seal between the plate 17 and the cover and the valve body.

Les fonctions des plaques planes 28 et des raidisseurs 29 constitutifs des appendices 13 ont déjà été exposées, l'ensemble de ces éléments étant à la fois simple et efficace, apte à permettre une fixation satisfaisante du couvercle 11 sur le corps de vanne.The functions of the flat plates 28 and the stiffeners 29 constituting the appendages 13 have already been described, all of these elements being both simple and effective, capable of allowing satisfactory fixing of the cover 11 on the valve body.

Il convient aussi de remarquer le montage de la bride 10 entre le presse-étoupe 12 et le couvercle 11 et le choix judicieux de la position du joint d'étanchéité 15, choix qui permet le démontage du presse-étoupe 12 sans interruption de l'alimentation en fluide assurée par la conduite 46. L'entretien du presse-étoupe est facilité par l'adoption de cette disposition particulière.It should also be noted the mounting of the flange 10 between the cable gland 12 and the cover 11 and the judicious choice of the position of the seal 15, choice which allows the dismantling of the cable gland 12 without interruption of the fluid supply provided by the pipe 46. Maintenance of the cable gland is facilitated by the adoption of this particular provision.

Il faut finalement observer que, du fait que, d'une part, de manière nouvelle, aucun rétrécissement de la section transversale de la face intérieure 37 de la paroi 32 n'est provoqué par l'ouverture 8, et, d'autre part, l'opercule d'obturation 3 peut remonter à l'intérieur de la chambre 7, il devient possible, sans démontage du corps de vanne 1 par rapport à la conduite 46, par simple démontage des éléments supérieurs du robinet-vanne - presse-étoupe 12, écrou 23, plaque supérieure 17 et couvercle 11 -, de procéder à toutes interventions d'entretien et/ou de réparation de la vis 9 et de l'opercule d'obturation 3, et même de sortir cet ensemble hors de la chambre 7 pour le réparer ou le remplacer par un ensemble neuf. Ceci constitue un avantage également important de la réalisation décrite.Finally, it should be observed that, because, on the one hand, in a new way, no narrowing of the cross section of the inner face 37 of the wall 32 is caused by the opening 8, and, on the other hand , the sealing cap 3 can go back up inside the chamber 7, it becomes possible, without disassembly of the valve body 1 relative to the pipe 46, by simple disassembly of the upper elements of the gate valve - press- packing 12, nut 23, upper plate 17 and cover 11 -, to carry out any maintenance and / or repair work on the screw 9 and the sealing cap 3, and even to take this assembly out of the chamber 7 to repair or replace it with a new set. This also constitutes an important advantage of the embodiment described.

Claims (8)

  1. Sliding valve comprising:
    - a valve body (1) provided with a seat (2) for abutment of a closure cap;
    - a closure cap (3) capable of being in tight obturating abutment on the seat (2) and receiving in a housing (4) a captive nut (5);
    - a chamber (7), made in the body (1), adapted to receive said cap (3) in the open configuration of the sliding valve;
       - an opening (8) in said chamber (7), allowing passage of a threaded rod (9) which cooperates with the captive nut (5) and comprising a flange (10) for assembly;
    - a cover (11) for obturating said opening (8) which cooperates in the axial holding of the threaded rod (9) as well as in the rotational assembly of said rod; and
    - a stuffing box (12) which effects seal of the passage of the threaded rod (9) through the cover (11);
    said cover (11) being provided with at least two appendices (13) which extend radially, said appendices preferably being spaced apart angularly and regularly, fast with the cover (11) and extending substantially transversely with respect to the axis (6) of the cover;
    characterized in that:
    a) each appendix is constituted by a plane plate (28) which extends substantially transversely with respect to the axis (6) of the cover and by a stiffener (29) fast with the cover (11) and the plane plate (28) and extending substantially parallel to axis (6);
    b) the valve body (1) comprises, in the zone of said opening (8), as many appendix housings as there are appendices, each housing being constituted by a blind recess (27) capable of receiving one of said appendices (13) in a "bayonet" type assembly, the recess (27) itself being stepped to receive this plane plate (28) and this stiffener (29);
    c) an upper plate (17), distinct from the valve body, presents, on the one hand, a bore (18) traversed by the outer part (19) of the cover (11), on the other hand, a face (21), transverse with respect to the axis (6) of said bore, adapted to be in abutment on the outer face (26) of the valve body defining the opening (8) of said valve body;
    d) a nut (23) cooperates with a threading (24) with which said outer part (19) of the cover is provided, so as to place in abutment, on the one hand, the appendices (13) on the walls (25) defining the recesses (27), on the other hand, the upper plate (17) on the outer transverse face (26) defining the opening (8) of the valve body;
    the height (H27) of that part of the recess intended to receive the stiffener (29) being such that, after tightening of the nut (23) on the threading (24) of the outer part (19) of the cover (11), the plane plates (28) of the various appendices are in abutment on the transverse walls (25) of the recesses, whilst the stiffeners (29) remain out of abutment on said transverse walls of the recesses.
  2. Sliding valve according to Claim 1, characterized in that the radial distance (R14) between the axis (6) of the cover (11) and the outer periphery (14) of an appendix (13) is less than the radial distance (R8) between the central axis (6) of the inner face (8) of the wall of the valve body defining said opening and said inner face (8), in order to allow introduction for presentation of the appendices (13) opposite the openings (16) in said blind recesses (27).
  3. Sliding valve according to either one of Claims 1 and 2, characterized in that an O-ring (15) is disposed between one (35) of the faces of the flange (10) and a counter-sink (36) with which the cover (11) is provided.
  4. Sliding valve according to Claim 3, characterized in that said O-ring (15) is disposed between that face (35) of the flange (10) which is that of the two faces of the flange which is most remote from the stuffing box (12) and the counter-sink (36) of the cover, which is oriented towards said stuffing box (12).
  5. Sliding valve according to any one of Claims 1 to 4, characterized in that the outer part (19) of the cover (11) comprises a tapped bore (30) which cooperates with an outer thread (31) of the stuffing box (12) for fixation of said stuffing box, O-rings (33 and 34) of the stuffing box being disposed between the end part of the threaded rod (9) and the stuffing box (12) and, between the stuffing box (12) and said cover (11), respectively.
  6. Sliding valve according to any one of Claims 1 to 5, characterized in that O-rings (20, 22) are disposed, on the one hand, (20), between the upper plate (17) and the cover (11), on the other hand, (22), between the upper plate (17) and the outer transverse face (26) of the valve body.
  7. Sliding valve according to any one of Claims 1 to 6, characterized in that the blind recesses (27) extend radially towards the outside of the valve body, the walls defining them not overlapping the substantially cylindrical inner face (37), of constant section, of the wall (32) defining the chamber (7), with the result that the opening (8) of this chamber (7) provokes no narrowing of the section of said chamber (7).
  8. Sliding valve according to any one of Claims 1 to 7, characterized in that the blind recesses (27) are made in protuberances (38) of the wall (32) defining the chamber (7), which protuberances extend radially towards the outside of the valve body.
EP91400514A 1990-02-27 1991-02-26 Sliding valve Expired - Lifetime EP0445020B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9002438 1990-02-27
FR9002438A FR2658895B1 (en) 1990-02-27 1990-02-27 VALVE-VALVE.

Publications (2)

Publication Number Publication Date
EP0445020A1 EP0445020A1 (en) 1991-09-04
EP0445020B1 true EP0445020B1 (en) 1994-05-25

Family

ID=9394187

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91400514A Expired - Lifetime EP0445020B1 (en) 1990-02-27 1991-02-26 Sliding valve

Country Status (6)

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EP (1) EP0445020B1 (en)
AT (1) ATE106121T1 (en)
DE (1) DE69102084T2 (en)
DK (1) DK0445020T3 (en)
ES (1) ES2056591T3 (en)
FR (1) FR2658895B1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5470046A (en) * 1993-01-05 1995-11-28 Mueller Company Gate valve structure
FR2798715B1 (en) * 1999-09-21 2001-11-09 Air Liquide SEALING ASSEMBLY FOR TAP AND TAP PROVIDED WITH SUCH ASSEMBLY
AT408721B (en) 1999-10-01 2002-02-25 Cistem Biotechnologies Gmbh PHARMACEUTICAL COMPOSITION CONTAINING AN ANTIG
US6601857B1 (en) * 2001-08-21 2003-08-05 Daryl E. Richmond Tool holder clamp seal for fluid cooled tool
UA78335C2 (en) 2002-06-27 2007-03-15 Е. Хоул Арматуренверке Гмбх Shutoff fitting
AT512355B1 (en) * 2012-01-05 2013-10-15 E Hawle Armaturenwerke Gmbh SPINDLE BEARING FOR A SHUT-OFF ARMATURE
GB201213808D0 (en) * 2012-08-03 2012-09-12 Enston Robert P Improved pipeline apparatus
JP6039528B2 (en) * 2013-10-21 2016-12-07 岡山市 Valve lid removal method, valve removal method and valve lid attachment for gate valve
US10295067B2 (en) 2015-08-19 2019-05-21 Kohler Co. Retainer for check valve
GB2559998B (en) 2017-02-24 2019-05-08 Pipe Transf Ltd Pipeline apparatus with releasably lockable device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR738677A (en) * 1931-11-21 1932-12-28 Improvements to steam, hydraulic and similar valves
FR750178A (en) * 1933-02-04 1933-08-05 Cocard Jules Sa Valves and other plugs for vapor, liquid or other fluid
US2610820A (en) * 1946-11-15 1952-09-16 Edward Valves Inc Valve bonnet structure
US2660191A (en) * 1948-12-20 1953-11-24 Alexander S Volpin Gate valve
US2541968A (en) * 1949-04-25 1951-02-13 W K M Company Gate valve
NO155943C (en) * 1984-08-03 1987-06-24 Bopp & Reuther Gmbh Bolting.
DE3764962D1 (en) * 1987-11-02 1990-10-18 Waldenmaier J E H FITTING WITH SCREWLESS LID.

Also Published As

Publication number Publication date
ATE106121T1 (en) 1994-06-15
DE69102084T2 (en) 1994-09-22
FR2658895B1 (en) 1992-07-03
DE69102084D1 (en) 1994-06-30
DK0445020T3 (en) 1994-06-27
FR2658895A1 (en) 1991-08-30
ES2056591T3 (en) 1994-10-01
EP0445020A1 (en) 1991-09-04

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